{% extends 'demo/base.html' %}
{% block header %}
    {% include 'demo/header.html' %}
{% endblock %}
{% block main %}
    {% include 'demo/classes.html' %}
    <div>咨询头条----{{ block.super }}
    </div>
    <div>开源项目</div>
    <div>{{ str1|cut:" " }}</div>
{% endblock %}